Home / 1,376.98-1,902.96-1,127.90

Finding the Fourth Proportional to 1,376.98, 1,902.96 and 1,127.90

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Solution

The fourth proportional to 1,376.98, 1,902.96 and 1,127.90 is: 1,558.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.98 : 1,902.96 = 1,127.90 : x
  2. Step 2: Convert to fraction form
    1,376.98/1,902.96 = 1,127.90/x
  3. Step 3: Cross multiply
    1,376.98x = 1,902.96 × 1,127.90
  4. Step 4: Simplify right side
    1,376.98x = 2,146,353.34
  5. Step 5: Solve for x
    x = 2,146,353.34/1,376.98
  6. Step 6: Final answer
    x = 1,558.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.